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dnl Process this with autoconf to create configure

AC_PREREQ(2.59)

AC_INIT([libffi], [2.1], [http://gcc.gnu.org/bugs.html])

AC_CONFIG_HEADERS([fficonfig.h])

AM_ENABLE_MULTILIB(, ..)

AC_CANONICAL_SYSTEM

target_alias=${target_alias-$host_alias}

. ${srcdir}/configure.host

AM_INIT_AUTOMAKE

# The same as in boehm-gc and libstdc++. Have to borrow it from there.

# We must force CC to /not/ be precious variables; otherwise

# the wrong, non-multilib-adjusted value will be used in multilibs.

# As a side effect, we have to subst CFLAGS ourselves.

m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])

m4_define([_AC_ARG_VAR_PRECIOUS],[])

AC_PROG_CC

m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])

AC_SUBST(CFLAGS)

AM_PROG_AS

AM_PROG_CC_C_O

AC_PROG_LIBTOOL

AM_MAINTAINER_MODE

AC_CHECK_HEADERS(sys/mman.h)

AC_CHECK_FUNCS(mmap)

AC_FUNC_MMAP_BLACKLIST

dnl The -no-testsuite modules omit the test subdir.

AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)

TARGETDIR="unknown"

case "$host" in

i*86-*-linux*) TARGET=X86; TARGETDIR=x86;;

i*86-*-gnu*) TARGET=X86; TARGETDIR=x86;;

i*86-*-solaris2.1[[0-9]]*) TARGET=X86_64; TARGETDIR=x86;;

i*86-*-solaris*) TARGET=X86; TARGETDIR=x86;;

i*86-*-beos*) TARGET=X86; TARGETDIR=x86;;

i*86-*-freebsd* | i*86-*-kfreebsd*-gnu) TARGET=X86; TARGETDIR=x86;;

i*86-*-netbsdelf* | i*86-*-knetbsd*-gnu) TARGET=X86; TARGETDIR=x86;;

i*86-*-rtems*) TARGET=X86; TARGETDIR=x86;;

i*86-*-win32*) TARGET=X86_WIN32; TARGETDIR=x86;;

i*86-*-cygwin*) TARGET=X86_WIN32; TARGETDIR=x86;;

i*86-*-mingw*) TARGET=X86_WIN32; TARGETDIR=x86;;

frv-*-*) TARGET=FRV; TARGETDIR=frv;;

sparc-sun-4*) TARGET=SPARC; TARGETDIR=sparc;;

sparc*-sun-*) TARGET=SPARC; TARGETDIR=sparc;;

sparc-*-linux* | sparc-*-netbsdelf* | sparc-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;

sparc*-*-rtems*) TARGET=SPARC; TARGETDIR=sparc;;

sparc64-*-linux* | sparc64-*-netbsd* | sparc64-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;

alpha*-*-linux* | alpha*-*-osf* | alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu | alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu) TARGET=ALPHA; TARGETDIR=alpha;;

ia64*-*-*) TARGET=IA64; TARGETDIR=ia64;;

m32r*-*-linux* ) TARGET=M32R; TARGETDIR=m32r;;

m68k-*-linux*) TARGET=M68K; TARGETDIR=m68k;;

mips64*-*);;

mips-sgi-irix5.* | mips-sgi-irix6.*) TARGET=MIPS_IRIX; TARGETDIR=mips;;

mips*-*-linux*) TARGET=MIPS_LINUX; TARGETDIR=mips;;

powerpc*-*-linux* | powerpc-*-sysv*) TARGET=POWERPC; TARGETDIR=powerpc;;

powerpc-*-beos*) TARGET=POWERPC; TARGETDIR=powerpc;;

powerpc-*-darwin*) TARGET=POWERPC_DARWIN; TARGETDIR=powerpc;;

powerpc-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;

powerpc-*-freebsd*) TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc;;

powerpc*-*-rtems*) TARGET=POWERPC; TARGETDIR=powerpc;;

rs6000-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;

arm*-*-linux-*) TARGET=ARM; TARGETDIR=arm;;

arm*-*-netbsdelf* | arm*-*-knetbsd*-gnu) TARGET=ARM; TARGETDIR=arm;;

arm*-*-rtems*) TARGET=ARM; TARGETDIR=arm;;

cris-*-*) TARGET=LIBFFI_CRIS; TARGETDIR=cris;;

s390-*-linux-*) TARGET=S390; TARGETDIR=s390;;

s390x-*-linux-*) TARGET=S390; TARGETDIR=s390;;

x86_64-*-linux* | x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu) TARGET=X86_64; TARGETDIR=x86;;

sh-*-linux* | sh[[34]]*-*-linux*) TARGET=SH; TARGETDIR=sh;;

sh-*-rtems*) TARGET=SH; TARGETDIR=sh;;

sh64-*-linux* | sh5*-*-linux*) TARGET=SH64; TARGETDIR=sh64;;

hppa-*-linux* | parisc-*-linux*) TARGET=PA; TARGETDIR=pa;;

esac

AC_SUBST(AM_RUNTESTFLAGS)

if test $TARGETDIR = unknown; then

  AC_MSG_ERROR(["libffi has not been ported to $host."])

fi

AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)

AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)

AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)

AM_CONDITIONAL(X86, test x$TARGET = xX86)

AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)

AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)

AM_CONDITIONAL(IA64, test x$TARGET = xIA64)

AM_CONDITIONAL(M32R, test x$TARGET = xM32R)

AM_CONDITIONAL(M68K, test x$TARGET = xM68K)

AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)

AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)

AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)

AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)

AM_CONDITIONAL(ARM, test x$TARGET = xARM)

AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)

AM_CONDITIONAL(FRV, test x$TARGET = xFRV)

AM_CONDITIONAL(S390, test x$TARGET = xS390)

AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)

AM_CONDITIONAL(SH, test x$TARGET = xSH)

AM_CONDITIONAL(SH64, test x$TARGET = xSH64)

AM_CONDITIONAL(PA, test x$TARGET = xPA)

case x$TARGET in

  xMIPS*) TARGET=MIPS ;;

  *) ;;

esac

AC_HEADER_STDC

AC_CHECK_FUNCS(memcpy)

AC_FUNC_ALLOCA

AC_CHECK_SIZEOF(double)

AC_CHECK_SIZEOF(long double)

# Also AC_SUBST this variable for ffi.h.

HAVE_LONG_DOUBLE=0

if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then

  if test $ac_cv_sizeof_long_double != 0; then

    HAVE_LONG_DOUBLE=1

    AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])

  fi

fi

AC_SUBST(HAVE_LONG_DOUBLE)

AC_C_BIGENDIAN

if test x$TARGET = xSPARC; then

    AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],

        libffi_cv_as_sparc_ua_pcrel, [

        save_CFLAGS="$CFLAGS"

        save_LDFLAGS="$LDFLAGS"

        CFLAGS="$CFLAGS -fpic"

        LDFLAGS="$LDFLAGS -shared"

        AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,

                    [libffi_cv_as_sparc_ua_pcrel=yes],

                    [libffi_cv_as_sparc_ua_pcrel=no])

        CFLAGS="$save_CFLAGS"

        LDFLAGS="$save_LDFLAGS"])

    if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then

        AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,

                  [Define if your assembler and linker support unaligned PC relative relocs.])

    fi

    AC_CACHE_CHECK([assembler .register pseudo-op support],

       libffi_cv_as_register_pseudo_op, [

       libffi_cv_as_register_pseudo_op=unknown

       # Check if we have .register

       AC_TRY_COMPILE([asm (".register %g2, #scratch");],,

                       [libffi_cv_as_register_pseudo_op=yes],

                       [libffi_cv_as_register_pseudo_op=no])

    ])

    if test "x$libffi_cv_as_register_pseudo_op" = xyes; then

       AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,

               [Define if your assembler supports .register.])

    fi

fi

AC_CACHE_CHECK([whether .eh_frame section should be read-only],

    libffi_cv_ro_eh_frame, [

        libffi_cv_ro_eh_frame=no

        echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c

        if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then

            if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then

                libffi_cv_ro_eh_frame=yes

            elif grep '.section.*eh_frame.*#alloc' conftest.c \

                 | grep -v '#write' > /dev/null; then

                libffi_cv_ro_eh_frame=yes

            fi

        fi

        rm -f conftest.*

    ])

if test "x$libffi_cv_ro_eh_frame" = xyes; then

    AC_DEFINE(HAVE_RO_EH_FRAME, 1,

              [Define if .eh_frame sections should be read-only.])

    AC_DEFINE(EH_FRAME_FLAGS, "a",

              [Define to the flags needed for the .section .eh_frame directive.])

else

    AC_DEFINE(EH_FRAME_FLAGS, "aw",

              [Define to the flags needed for the .section .eh_frame directive.])

fi

AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],

    libffi_cv_hidden_visibility_attribute, [

        echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c

        libffi_cv_hidden_visibility_attribute=no

        if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then

            if grep '\.hidden.*foo' conftest.s >/dev/null; then

                libffi_cv_hidden_visibility_attribute=yes

            fi

        fi

        rm -f conftest.*

    ])

if test $libffi_cv_hidden_visibility_attribute = yes; then

    AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,

              [Define if __attribute__((visibility("hidden"))) is supported.])

fi

AH_BOTTOM([

#ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE

#ifdef LIBFFI_ASM

#define FFI_HIDDEN(name) .hidden name

#else

#define FFI_HIDDEN __attribute__ ((visibility ("hidden")))

#endif

#else

#ifdef LIBFFI_ASM

#define FFI_HIDDEN(name)

#else

#define FFI_HIDDEN

#endif

#endif

])

AC_SUBST(TARGET)

AC_SUBST(TARGETDIR)

AC_SUBST(SHELL)

AC_ARG_ENABLE(debug,

[  --enable-debug          debugging mode],

  if test "$enable_debug" = "yes"; then

    AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])

  fi)

AC_ARG_ENABLE(structs,

[  --disable-structs       omit code for struct support],

  if test "$enable_structs" = "no"; then

    AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])

  fi)

AC_ARG_ENABLE(raw-api,

[  --disable-raw-api       make the raw api unavailable],

  if test "$enable_raw_api" = "no"; then

    AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])

  fi)

AC_ARG_ENABLE(purify-safety,

[  --enable-purify-safety  purify-safe mode],

  if test "$enable_purify_safety" = "yes"; then

    AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])

  fi)

if test -n "$with_cross_host" &&

   test x"$with_cross_host" != x"no"; then

  toolexecdir='$(exec_prefix)/$(target_alias)'

  toolexeclibdir='$(toolexecdir)/lib'

else

  toolexecdir='$(libdir)/gcc-lib/$(target_alias)'

  toolexeclibdir='$(libdir)'

fi

multi_os_directory=`$CC -print-multi-os-directory`

case $multi_os_directory in

  .) ;; # Avoid trailing /.

  *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;

esac

AC_SUBST(toolexecdir)

AC_SUBST(toolexeclibdir)

if test "${multilib}" = "yes"; then

  multilib_arg="--enable-multilib"

else

  multilib_arg=

fi

AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])

AC_CONFIG_COMMANDS(src, [

test -d src || mkdir src

test -d src/$TARGETDIR || mkdir src/$TARGETDIR

], [TARGETDIR="$TARGETDIR"])

AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)

AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)

AC_OUTPUT